Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 301 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) mud from water (c) sugar from sugar water (d) bad grains from rice
2. 2.🧂 Which of these does not dissolve in water? (a) sand (b) table salt (c) baking soda (d) glucose powder
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is what we measure. (a) True (b) False
4. 4.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
5. 5.🌱 Which of these is not needed for a seed to sprout? (a) sugar (b) warmth (c) water (d) air
6. 6.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) lemon juice
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the amount of salt (b) days to see crystals (c) the amount of water (d) sunny or shady place
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the number of drops
10. 10.True or false: sugar is something yeast needs. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) cutting the lemon (b) plugging in the iron (c) ironing the paper (d) dipping the cotton bud
12. 12.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to clean floors (c) to make bread rise (d) to wash dishes
13. 13.🔮 Predict: you stop shaking after only one minute. What do you have? (a) cheese (b) ghee (c) butter lumps (d) still runny cream
14. 14.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
15. 15.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) baking soda water (d) detergent water
16. 16.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) a battery cell (c) sugar (d) a comb
17. 17.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) turmeric powder (c) a mirror (d) warm water
18. 18.🎈 Why does the balloon blow up? (a) outside air gets in (b) gas is made inside (c) the bottle shrinks (d) vinegar is hot
19. 19.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
20. 20.🧺 Which of these is needed for the turmeric test? (a) water (b) a comb (c) a magnet (d) a mirror
21. 21.🧺 Do we need a tray for spills for the fizzy balloon? (a) needed (b) not needed
22. 22.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) size of the balloon (c) the same bottle (d) the amount of vinegar
24. 24.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) fat bits stick together (c) the lid is warm (d) the jar adds butter
25. 25.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) rusting iron (d) melting ice
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🔍 Which is the odd one out? (a) cooking an egg (b) melting butter (c) melting ice (d) dissolving salt
28. 28.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) amount of water drops (b) the same kind of bag (c) sun or shade (d) the kind of plant
30. 30.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it makes salt (b) it takes much longer (c) it turns pink (d) it is much faster
31. 31.📘 What is yeast? (a) a kind of salt (b) a tiny living fungus (c) a kind of stone (d) a kind of sugar
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a spoon (d) yeast
33. 33.🪴 Where did the water inside the bag come from? (a) the rubber band (b) the plastic (c) the rain (d) the leaves
34. 34.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is what we measure. (a) True (b) False
35. 35.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
36. 36.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
37. 37.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same place”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.True or false: soap solution is needed for the turmeric test. (a) False (b) True

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